The effects of peripheral anterior synechiae on refractive outcomes after cataract surgery in eyes with primary angle-closure disease

Objective of the study was to investigate the effects of peripheral anterior synechiae (PAS) on refractive outcomes after cataract surgery in eyes with primary angle-closure disease (PACD).This is a retrospective, cross-sectional study. Seventy eyes of 70 PACD patients who underwent phacoemulsification and intraocular lens implantation. Patients were divided into 2 groups based on the presence of PAS on preoperative gonioscopy. The predictive power of the intraocular lens was calculated by the SRK/T, Hoffer Q, Haigis, and Holladay formulae. The mean absolute error (MAE) and predicted refractive errors were compared between PAS (+) and PAS (-) groups. We also evaluated the refractive errors with regards to the extent of PAS in the subanalyses.The mean MAE was greater in the PAS (+) group with all formulae (0.61-0.70 diopters [D] vs 0.33-0.45 D, all P < .05). The eyes with PAS tended towards myopia (-0.30 D to -0.51 D vs -0.05 D to +0.24 D, all P < .05). However, the MAEs or predicted refractive errors were not different, irrespective of the extent of PAS in the subanalyses (all, P > .05).The presence or absence of PAS may influence the postoperative refractive outcomes in PACD patients.